Fritz Boden, Nicholas Lawson, Henk W. Jentink, Jürgen's Advanced In-Flight Measurement Techniques PDF

By Fritz Boden, Nicholas Lawson, Henk W. Jentink, Jürgen Kompenhans

ISBN-10: 3642347371

ISBN-13: 9783642347375

The ebook provides a synopsis of the most effects accomplished through the three 12 months EU-project "Advanced Inflight dimension options (AIM)" which utilized complicated photograph dependent size innovations to business flight trying out. The publication is meant to be not just an outline at the objective actions but in addition a advisor at the program of complicated optical dimension ideas for destiny flight checking out. in addition it's a beneficial advisor for engineers within the box of experimental equipment and flight checking out who face the problem of a destiny requirement for the advance of hugely actual non-intrusive in-flight size options.

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For the second step the measured acceleration and the deformation determined by IPCT must be transformed to the same physical units. Due to the requirement of a time resolved transformation, an integration of the acceleration signal was not possible. Hence it was chosen to calculate the second derivation of the deformation which equals the acceleration. This calculation was done in Matlab, where a 2nd derivative filter was designed. Applying this filter to the deformation signal yields the time resolved acceleration.

This pattern, developed by DLR, contains dots with two different sizes— one optimized for the short viewing distance and one optimized for the long distance. On regions where big dots overlay small dots, both dots are combined with an XOR function. The wing with the applied pattern and a detailed view of the pattern are shown in the left image of Fig. 13. To excite the aircraft wing, an electromagnetic 2 1 3 Fig. 13 Foil with cauliflower pattern (left) and shaker attachment (right → 1 outer wing with pattern foil; 2 shaker rod; 3 shaker) for the ground vibration testing 46 F.

In what follows, a brief description of the test set-up, the test instrumentation, the data analysis and the results of the ground vibration measurements will be presented. 1 Introduction Usually strain gauges and accelerometers are used during flight tests to measure the deformation and movement of aircraft structures. These sensors are highly sophisticated and give data with a high accuracy within a short time. However, they are F. Boden (B) · T. Wolf · A. de C. it F. Boden et al. 1007/978-3-642-34738-2_4, © Springer-Verlag Berlin Heidelberg 2013 33 34 F.

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Advanced In-Flight Measurement Techniques by Fritz Boden, Nicholas Lawson, Henk W. Jentink, Jürgen Kompenhans


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